45609972 has 24 divisors (see below), whose sum is σ = 106653792. Its totient is φ = 15170400.

The previous prime is 45609961. The next prime is 45609979. The reversal of 45609972 is 27990654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45609979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022 + ... + 9762.

It is an arithmetic number, because the mean of its divisors is an integer number (4443908).

Almost surely, 2^45609972 is an apocalyptic number.

It is an amenable number.

45609972 is an abundant number, since it is smaller than the sum of its proper divisors (61043820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45609972 is a wasteful number, since it uses less digits than its factorization.

45609972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239 (or 8237 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 45609972 is about 6753.5155289671. The cubic root of 45609972 is about 357.2892382502.

The spelling of 45609972 in words is "forty-five million, six hundred nine thousand, nine hundred seventy-two".